Broad-spectrum describes a chemical or medicine that works against a wide range of pests, germs, or diseases, not just one kind. Doctors talk about a broad-spectrum antibiotic when they need a drug that can hit many types of bacteria at once. Farmers and gardeners use the same idea for pesticides.

Broad-spectrum「Broad-spectrum」 describes形容的是 a chemical or medicine一種化學物質或藥物 that works against能對付 a wide range of pests, germs, or diseases很廣範圍的害蟲、細菌、或疾病, not just one kind不只一種。Doctors醫生 talk about會談到 a broad-spectrum antibiotic廣效性抗生素 when當 they需要 need a drug一種藥 that能一次 can hit many types of bacteria at once打到很多種細菌時。Farmers and gardeners農夫和園丁 use the same idea用同樣的概念 for pesticides在殺蟲劑上。

Though actually, ‘broad’ is not always better. A medicine that kills many kinds of bacteria can also kill useful ones, so good doctors try not to reach for a broad-spectrum drug when a narrower one would do.

Though actually但其實, 'broad'「broad」廣 is not always better不永遠比較好。A medicine一種藥 that kills能殺死 many kinds of bacteria很多種細菌 can also kill也可能殺死 useful ones有用的細菌, so所以 good doctors好醫生 try not to reach for盡量不去用 a broad-spectrum drug廣效性藥物 when narrower one would do當窄一點的藥就夠用時。

The word is almost always used before a noun: a broad-spectrum antibiotic, a broad-spectrum pesticide. People have stretched it a little, too — for example, broad-spectrum sunscreen means a cream that covers a wide range of ultraviolet light — but the core picture is still ‘one thing that covers a wide range of targets.’

The word這個字 is almost always used幾乎總是用 before a noun在名詞前面: a broad-spectrum antibiotic廣效性抗生素, a broad-spectrum pesticide廣效性殺蟲劑。People人們 have stretched it a little也把它延伸了一點, too — for example舉例來說, broad-spectrum sunscreen廣效性防曬乳 means意思是 a cream一種乳霜 that covers能涵蓋 a wide range of ultraviolet light很廣範圍的紫外線 — but但 the core picture核心畫面 is still仍然是「一樣東西涵蓋很廣範圍的目標」 'one thing that covers a wide range of targets.'